Yokohama National University

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The paper examines the effects of both ambiguity and information lifespan on the optimal investment rate as well as on the DMs' behavior. The research allows one to show that under an ambiguous setting, the end-of-period price expectation reflects the DMs' degree of perception to the market ambiguity. The authors...

This paper constructs import variety indices, as developed by Feenstra (1994), for 21 industries over a twenty year period for Japan. Next, both single-equation and panel regressions of productivity (TFP) on import variety and R&D are conducted. Results find that increased import variety, both own-variety and upstream inputs, positively affect...

The paper examines the effects of both ambiguity and information lifespan on the optimal investment rate as well as on the DMs' behavior. The research allows one to show that under an ambiguous setting, the end-of-period price expectation reflects the DMs' degree of perception to the market ambiguity. The authors...

This paper constructs import variety indices, as developed by Feenstra (1994), for 21 industries over a twenty year period for Japan. Next, both single-equation and panel regressions of productivity (TFP) on import variety and R&D are conducted. Results find that increased import variety, both own-variety and upstream inputs, positively affect...

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